Exodus 34:25 YLT

²³  'Three times in a year do all thy males appear before the Lord Jehovah, God of Israel;

²⁴  for I dispossess nations from before thee, and have enlarged thy border, and no man doth desire thy land in thy going up to appear before Jehovah thy God three times in a year.

²⁵  'Thou dost not slaughter with a fermented thing the blood of My sacrifice; and the sacrifice of the feast of the passover doth not remain till morning:

²⁶  the first of the first-fruits of the land thou dost bring into the house of Jehovah thy God; thou dost not boil a kid in its mother's milk.'

²⁷  And Jehovah saith unto Moses, 'Write for thyself these words, for, according to the tenor of these words I have made with thee a covenant, and with Israel.'