Jeremiah 5:26 -27

26 For among my people are found wicked men: they lay wait, as he that setteth snares; they set a trap, they catch men.
27 As a cage is full of birds, so are their houses full of deceit: therefore they are become great, and waxen rich.

Genesis 14:20

And blessed be the most high God, which hath delivered thine enemies into thy hand. And he gave him tithes of all

Hebrews 7:1-10

And verily they that are of the sons of Levi, who receive the office of the priesthood, have a commandment to take tithes of the people according to the law, that is, of their brethren, though they come out of the loins of Abraham:

Numbers 18:24

But the tithes of the children of Israel, which they offer as an heave offering unto the LORD, I have given to the Levites to inherit: therefore I have said unto them, Among the children of Israel they shall have no inheritance.

Nehemiah 10:38

And the priest the son of Aaron shall be with the Levites, when the Levites take tithes: and the Levites shall bring up the tithe of the tithes unto the house of our God, to the chambers, into the treasure house.

Tithing was a specific requirement for the nation of Israel under the Mosaic Law to support the Levites, priests, and the poor, and was tied to the agricultural produce of the land of Israel.

Deuteronomy 14:22

Thou shalt truly tithe all the increase of thy seed, that the field bringeth forth year by year.

Tobit 1:6-7

6 But I alone went often to Jerusalem at the feasts, as it was ordained unto all the people of Israel by an everlasting decree, having the firstfruits and tenths of increase, with that which was first shorn; and them gave I at the altar to the priests the children of Aaron.
7 The first tenth part of all increase I gave to the sons of Aaron, who ministered at Jerusalem: another tenth part I sold away, and went, and spent it every year at Jerusalem:

In the Old Testament, the tithe was a tenth of agricultural produce and livestock, not money or wages.
Forcing a monetary tithe on income is an unbiblical modern invention.

Matthew 23:23

Woe unto you, scribes and Pharisees, hypocrites! for ye pay tithe of mint and anise and cummin, and have omitted the weightier matters of the law, judgment, mercy, and faith: these ought ye to have done, and not to leave the other undone.

Luke 11:42

But woe unto you, Pharisees! for ye tithe mint and rue and all manner of herbs, and pass over judgment and the love of God: these ought ye to have done, and not to leave the other undone.

Psalms 112:5

A good man sheweth favour, and lendeth: he will guide his affairs with discretion.

2 Corinthians 9:6-12

6 But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully.
7 Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver.
8 And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work:
9 (As it is written, He hath dispersed abroad; he hath given to the poor: his righteousness remaineth for ever.
10 Now he that ministereth seed to the sower both minister bread for your food, and multiply your seed sown, and increase the fruits of your righteousness;)
11 Being enriched in every thing to all bountifulness, which causeth through us thanksgiving to God.
12 For the administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God;

The New Testament emphasizes generous, voluntary, and cheerful giving as led by the Holy Spirit, not a fixed percentage given out of compulsion, obligation, or fear of a curse. Passages like 2 Corinthians 9:7 ("God loves a cheerful giver")
There is no explicit command in the New Testament epistles (letters to the early Church) for Christians to tithe a set 10% of their income.

Malachi 3:8-12

8 Will a man rob God? Yet ye have robbed me. But ye say, Wherein have we robbed thee? In tithes and offerings.
9 Ye are cursed with a curse: for ye have robbed me, even this whole nation.
10 Bring ye all the tithes into the storehouse, that there may be meat in mine house, and prove me now herewith, saith the LORD of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough to receive it.
11 And I will rebuke the devourer for your sakes, and he shall not destroy the fruits of your ground; neither shall your vine cast her fruit before the time in the field, saith the LORD of hosts.
12 And all nations shall call you blessed: for ye shall be a delightsome land, saith the LORD of hosts.

Mandatory tithing is often used by some church leaders to manipulate congregants for financial gain, instilling guilt or fear (citing Malachi 3 about "robbing God") in those who cannot afford to give or choose not to.

Tithe Deception