Leviticus 22:29

And when ye sacrifice a sacrifice of thanksgiving unto Jehovah, ye shall sacrifice it that ye may be accepted.

Psalm 107:22

And let them offer the sacrifices of thanksgiving, And declare his works with singing.

Psalm 116:17

I will offer to thee the sacrifice of thanksgiving, And will call upon the name of Jehovah.

Amos 4:5

and offer a sacrifice of thanksgiving of that which is leavened, and proclaim freewill-offerings and publish them: for this pleaseth you, O ye children of Israel, saith the Lord Jehovah.

Leviticus 7:12-15

If he offer it for a thanksgiving, then he shall offer with the sacrifice of thanksgiving unleavened cakes mingled with oil, and unleavened wafers anointed with oil, and cakes mingled with oil, of fine flour soaked.

Hosea 14:2

Take with you words, and return unto Jehovah: say unto him, Take away all iniquity, and accept that which is good: so will we render as bullocks the offering of our lips.

Hebrews 13:15

Through him then let us offer up a sacrifice of praise to God continually, that is, the fruit of lips which make confession to his name.

1 Peter 2:5

ye also, as living stones, are built up a spiritual house, to be a holy priesthood, to offer up spiritual sacrifices, acceptable to God through Jesus Christ.

Treasury of Scripture Knowledge

Summary

And when ye will offer a sacrifice of thanksgiving unto the LORD, offer it at your own will.

Bible References

General references

Leviticus 7:12
If he offer it for a thanksgiving, then he shall offer with the sacrifice of thanksgiving unleavened cakes mingled with oil, and unleavened wafers anointed with oil, and cakes mingled with oil, of fine flour soaked.
Psalm 107:22
And let them offer the sacrifices of thanksgiving, And declare his works with singing.
Psalm 116:17
I will offer to thee the sacrifice of thanksgiving, And will call upon the name of Jehovah.
Hosea 14:2
Take with you words, and return unto Jehovah: say unto him, Take away all iniquity, and accept that which is good: so will we render as bullocks the offering of our lips.
Amos 4:5
and offer a sacrifice of thanksgiving of that which is leavened, and proclaim freewill-offerings and publish them: for this pleaseth you, O ye children of Israel, saith the Lord Jehovah.
Hebrews 13:15
Through him then let us offer up a sacrifice of praise to God continually, that is, the fruit of lips which make confession to his name.
1 Peter 2:5
ye also, as living stones, are built up a spiritual house, to be a holy priesthood, to offer up spiritual sacrifices, acceptable to God through Jesus Christ.

American Standard Version Public Domain