Faith, hope, and charity, the three theological virtues, are infused in the soul by God when we are baptized.
“Faith is the virtue by which we firmly believe all the truths God has revealed, on the word of God revealing them, who can neither deceive nor be deceived (John 20:29)” (Baltimore Catechism).
“Hope is the virtue by which we firmly trust that God, who is all-powerful and faithful to His promises, will in His mercy give us eternal happiness and the means to obtain it (Romans 8:24-25)” (Baltimore Catechism).
“Charity is the virtue by which we love God above all things for His own sake, and our neighbor as ourselves for the love of God (1 Corinthians 13:1-2)” (Baltimore Catechism).
With these acts of faith, hope, and love (charity), express your faith and hope in God, and your love for God and for your neighbor.