Romans 10:13 for, “Everyone who calls on the name of the Lord will be saved.”
This is a promise which we don’t get until we can grasp what it means. Someone may tell us something like this in the beginning, but until we understand just how great a promise this is we may never quite get it.
Christ backed up the scriptures by telling the disciples what it means to call on His name.
If we are willing to accept Christ as the Son of God and willing to praise and worship Him as such, then He is willing to call us His children.
God keeps His promises!