Charles Ellicott Commentary Deuteronomy 12:6

"and thither ye shall bring your burnt-offerings, and your sacrifices, and your tithes, and the heave-offering of your hand, and your vows, and your freewill-offerings, and the firstlings of your herd and of your flock:" — Deuteronomy 12:6 (ASV)

And there you shall bring ... your tithes — i.e., what the Jews understand as the “second tithe;” see Deuteronomy 12:17.