'Keep' in the Bible

"Ananias," said Peter, "why has Satan taken possession of your heart, that you should try to deceive the Holy Spirit and dishonestly keep back part of the price paid you for this land?

But certain men who had belonged to the sect of the Pharisees but were now believers, stood up in the assembly, and said, "Yes, Gentile believers ought to be circumcised and be ordered to keep the Law of Moses."

You must abstain from things sacrificed to idols, from blood, from things strangled, and from fornication. Keep yourselves clear of these things, and it will be well with you. Farewell."

and, after severely flogging them, they threw them into jail and bade the jailer keep them safely.