KJV : Speak <01696> (8761) thou also unto the children <01121> of Israel <03478>, saying <0559> (8800), Verily <0389> my sabbaths <07676> ye shall keep <08104> (8799): for it [is] a sign <0226> between me and you throughout your generations <01755>; that [ye] may know <03045> (8800) that I [am] the LORD <03068> that doth sanctify <06942> (8764) you.
NASB :
NASB# : "But as for you, speak<1696> to the sons<1121> of Israel<3478>, saying<559>, 'You shall surely<389> observe<8104> My sabbaths<7676>; for <I>this</I> is a sign<226> between<996> Me and you throughout your generations<1755>, that you may know<3045> that I am the LORD<3068> who sanctifies<6942> you.