For in the gospel the justice of God is revealed by faith and for faith, as it is written: But the just shall live by faith.
Romans 1:17 King James Version (RVR1960)

In this biblical text I will emphasize its final part that says: "... But the just shall live by faith."

Faith is nothing but the trust we have towards someone, in this specific case, God. As we walk with God and seek His presence, the relationship will become more interesting and full of intimacy. As we read the word we will know the immensity of God's love for us, and as we seek him in prayer, we will experience his approach, his caresses and sweetness towards us.

Intimacy with God leads us to develop our ability to trust Him, in other words, the closer we are to God, the greater the volume of our faith. Trust in God must be constant and permanent, it is not about feelings, it is about something deeper that cannot be perceived by our human senses, but by the smell of faith.

Faith connects us with the spirit sphere in which God is, faith helps us understand everything on the spiritual plane, helps us understand that everything that our eyes can see, God brought from what we do not It looked. None of us can see our own spirit, that is something very special that God placed in us to make us living souls, in the same way we cannot see the Spirit of God that is within us, but, we trust that it is within us .

All this leads us to the fact that if we maintain our constant trust in God, it will help us to overcome all the fears that appear in life; and we will have greater security to respond to the most complex and difficult situations.

If we want the expression, "If God is for us, who is against us," then we must continually trust God.