The obstacles that prevent us from trusting.

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God is wise and all-knowing, and thanks to this, we have the opportunity to fully trust in the plan he has designed for us, for our future.
Therefore, since we are surrounded by so great a cloud of witnesses, let us lay aside every weight and the sin that so easily entangles. And let us run with endurance the race marked out for us, 2 fixing our eyes on Jesus, the pioneer and perfecter of faith. For the joy set before him, he endured the cross, scorning its shame, and has sat down at the right hand of the throne of God.
3 Consider him who endured such hostility from sinners against himself, so that you may not grow weary and fainthearted.
Hebrews 12:1-3
God is all-wise because he knows everything; he knows how each of his children lives and how they ought to live. This, in turn, shows us our capacity to understand. Our understanding is limited, and that's why we generally struggle to understand and believe. It's important that we consider the most common obstacles that prevent us from fully understanding.
Oh, the depth of the riches of the wisdom and knowledge of God! How unsearchable are his judgments, and his ways past finding out!
Romans 11:33