'First fruits' in the Bible

And the feast of Harvest, when thou reapest the first fruits of thy labors which thou hast sown in the field. And the feast of ingathering, in the end of the year: when thou hast gathered in thy labors out of the field.

The first of the firstfruits of thy land thou shalt bring into the house of the LORD thy God. Thou shalt also not seethe a kid in his mother's milk.

Thou shalt observe the feast of weeks with the first fruits of wheat harvest, and the feast of ingathering at the years' end.

The first of the first fruits of thy land, thou shalt bring unto the house of the LORD thy God. And see that thou seethe not a kid in his mother's milk."