'Merely' in the Bible

"Be careful not to display your righteousness merely to be seen by people. Otherwise you have no reward with your Father in heaven.

"Sir," replied the Captain, "I am not a fit person to receive you under my roof: merely say the word, and my servant will be cured.

and they begged Him to let them merely touch the fringe of His robe; and all who touched it were perfectly restored.

But all these things are merely the beginning of birth pangs.