This is an expression used by some to mean that the person is out of absolute danger, and yet not fully delivered, just as the children of Israel were after the Passover and before crossing the Red Sea. They were “safe” from the judgment of God, but not yet saved from the power of the enemy. Hence we do not hear of salvation till Exod. 15. Many souls are even now in this condition, clinging to Christ’s work, and yet with no “singing,” no peace, no sense of acceptance.