Complete Trust in God

Jeremiah 17:7-8 (NKJV)

7 “Blessed is the man who trusts in the Lord,
And whose hope is the Lord.
8 For he shall be like a tree planted by the waters,
Which spreads out its roots by the river,
And will not fear when heat comes;
But its leaf will be green,
And will not be anxious in the year of drought,
Nor will cease from yielding fruit.