“Whoever is wise, let him attend to these things;
let them consider the steadfast love of the LORD.” – Psalm 107.43
יִשְׁמָר־ – root word translated as “let him attend” is “yismar” – to keep watch, guard. This is not just knowing a fact (in this case the Lord’s steadfast love); it is active engagement protecting and cherishing this knowledge. Are you on guard?