His commandments/sus mandamientos

1 John 2:4 (New King James Version)
4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him.

1 Juan 2:4 (Reina-Valera Antigua)
4 El que dice, Yo le he conocido, y no guarda sus mandamientos, el tal es mentiroso, y no hay verdad en él;