On this Second Thursday in Lent, The Angelic Doctor examines the meaning behind Christ's companions on the cross, the thieves on His right and on His left, the one who believed and entered Paradise, and the one who did not.
You can follow the Lenten Meditations of St Thomas Aquinas here: https://catholicharboroffaithandmorals.com/St.%20Thomas%20Aquinas%20Lenten%20Meditations.html