1 Samuel 16:2

It was the purpose of God that David should be anointed at this time as Saul’s successor, and as the ancestor and the type of His Christ. It was not the purpose of God that Samuel should stir up a civil war, by setting up David as Saul’s rival. Secrecy, therefore, was a necessary part of the transaction. But secrecy and concealment are not the same as duplicity and falsehood. Concealment of a good purpose, for a good purpose, is clearly justifiable. There is therefore nothing in the least inconsistent with truth in the occurrence here related. Compare Exodus 7:16; Exodus 8:1; Exodus 9:13.