What is a topic sentence for this outline? list three details about lent and prayer

Lent is a time of repentance, fasting and preparation for the coming of Easter. It is a time of self-examination and reflection. In the early church, Lent was a time to prepare new converts for baptism. Today, Christians focus on their relationship with God, often choosing to give up something or to volunteer and give of themselves for others.

Sundays in Lent are not counted in the forty days because each Sunday represents a "mini-Easter" and the reverent spirit of Lent is tempered with joyful anticipation of the Resurrection." http://www.umc.org/what-we-believe/what-is-lent-and-why-does-it-last-forty-days

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.