“Trust in the Lord forever,
for the Lord God is an everlasting rock.”

The word that we translate “trust” here does have a meaning quite similar to our English word, trust.  The Complete Word Study Bible defines this word as: “A verb indicating to trust, to be confident. It expresses the feeling of safety and security that is felt when one can rely on someone or something else.”  Trust is relying on someone else and I like to think of it that way because whether we know it or not, believe it or not, accept it or not, we will eventually understand that we cannot trust in ourselves, it just doesn’t work.

You can be the strongest man in the world, but the day will come [if you happen to live long enough] when your strength will fail you and what you trusted in will prove to have betrayed you.  You can be the smartest person who has ever lived, but will your brain help you defy death?  Will you live forever through your wits?  Beauty fades, intelligence wanes, strength grows feeble, power is  difficult to come by and quick to depart.  If you still think you can trust in yourself, then you are a fool, and I do not say that lightly.

In contrast to trusting in ourselves, Isaiah invites us to trust in the One Person in whom it is wise to trust: Yahweh.  We can trust in Him forever, because, as Isaiah is quick to point out, he is a metaphorical eternal rock. Whatever strong and solid rock that you can think of, that appears like it will stand to eternity and beyond, God is an everlasting rock, which means that we can trust in him in an everlasting way, indeed it means that we should trust in him forever.

Isaiah invites us here to trust and rely on someone who is worthy of all trust and capable of sustaining our trust in him in every situation, for all time, in every age, and that is someone worth trusting in.