'Command' in the Bible

and said to him, "If you are the Son of God, throw yourself down! For it is written, 'He will command his angels concerning you,' and 'On [their] hands they will lift you up, lest you strike your foot against a stone.'"

And Peter answered him [and] said, "Lord, if {it is you}, command me to come to you on the water!"

They said to him, "Why then did Moses command [us] to give a document--a certificate of divorce--and to divorce her?"