Isaiah 26:4 Trust in the Lord forever, for in YAH, the Lord, is everlasting strength.
Why should we trust in God and in Him alone? Because He is God and He will always be God.
He is our creator and He is our maintainer. We may break many things but God continues to try and lead us in the right direction.
We learn that strength comes from exercise and determination. We learn that strength comes after hard work.
God tries to show us strength comes from Him and that strength is everlasting. Trust. Faith.