Leviticus 19:19

Ye shall keep my statutes. Thou shalt not let thy cattle gender with a diverse kind: thou shalt not sow thy field with mingled seed: neither shall a garment mingled of linen and woollen come upon thee.

Cross-references

Deuteronomy 22:9-11 repeats the same prohibitions against mixing seeds, animals, and cloth, reinforcing the law.

In 2 Corinthians 6:14-17, Paul applies the mixing prohibition to spiritual separation from unbelievers, drawing a direct parallel.

In Deuteronomy 22:11, the same law forbids mixing wool and linen, reinforcing the command against mixing materials.