1 John 2:4 goes with John 14:21. It says, “He who says, I know Him, and does not keep His commandments, is a liar, and the truth is not in him.” 1 John 1:6 says, “If we say that we have fellowship with Him, and walk in darkness, we lie and do not practice the truth.”
How do we practice the truth? I love the statement that Franklin Graham said about his dad. That he was the same in the pulpit as he was at home. Are you the same behind closed doors as you are in the open? Our inner character is revealed by what we say and do. Is your message and the messenger the same?
A watermark is a faint imprint made on some types of paper during manufacture, that is visible when held against the light. Watermarks authenticate. In bazaar days, the vendor would cry out that their wares were sincere. It meant that there was no wax that was applied to hide the cracks. A wise buyer would take the vessel out into the light to authenticate its true value.