Definition: "Tsdr1" means "Thou shalt not". This Hebrew verb has various meanings in different languages, but it's often used metaphorically as an oath or promise that one must keep. In Christianity, this phrase is most commonly associated with God's command to protect innocent children from harm. The term can be found in the Old Testament and the New Testament, particularly in verses 11 and 28 of Deuteronomy 5:13.