But blessed is the one who trusts in the Lord, whose hope is in him. They will be like a tree planted by the water that sends out its roots by the stream. It does not fear when heat comes; its leaves are always green. It has no worries in a year of drought and never fails to bear fruit. (Jeremiah 17:7-8)
Trust is the assured belief in something. An assured belief (assurance meaning we believe or are sure, confident that something is true). The secular definition of assurance and confidence is a reliance on one's self. In fact, we can no longer use a secular dictionary to define biblical trust as the main focus is on self-reliance, and self-confidence... in other words, it relies on self, one's own ability, and strength. Thus confidence is built upon one's self, ability, and work. In the biblical sense, this would be equivalent to building one's house upon sand. Biblical trust comes not from self but from an external source or foundation.
Therefore everyone who hears these words of mine and does them is like a wise man who built his house on the rock (Matthew 7:24:29)
Notice that in the secular definition of trust, we see elements of faith; faith exists assurance, or confidence, and hope.* But true faith has an external foundation.* This foundation comes not from self but a reliance and confidence and assurance in God and his faithfulness. Believing is the work of God.* Thus faith exists things not seen because its assurance, hope and confidence come not from self but from God. Our part is to trust in God, and if our trust and faith comes from something external and not from ourselves then we must partake of that which gives it to us.
I am the vine, you are the branches, the one abiding in me and I in him bears much fruit, for apart from me you can do nothing (John 15:5)
Earlier we read the wise man is the one who does the words of Jesus. The words of Jesus increase faith as faith comes from the word of God, Jesus being the word of God. The seed is implanted in the child of God and grows up to bear fruit. They are planted and nourished from an external source, "like a tree planted by the water that sends out its roots by the stream" and will bear fruit in due season. The source from which obedience bears fruit is faith. Our job is to abide in the external source. This is the main difference between secular trust and biblical trust; between positive thinking and transformation or the renewing of the mind*; between self-confidence and self-reliance and the reliance on God in whom our confidence comes.
blessed is the one who trusts in the Lord, whose hope is in him...
Blessed are those who understand such truth, who experience it in their mind and soul, they will bear fruit, some thirty, some sixty, and some hundredfold. They are blessed and the source or substance or evidence exists though it is not seen. The external source gives life, like a tree planted by a river they will bear fruit. Imagine an oasis in a desert with palm trees. There exists a source of water though for miles around there is no life. The trees have their roots in the source, it matters not the circumstances around them, the scorching of the sun on the desert sand, as long as they abide in the water and the water abides in them, they will bear fruit in season.