Answer:
1.)Natural Signs- God reveals himself in creating us and everything we, hear and touch-nature-from beginning till now.
2.)Biblical Signs- God reveals himself in His words and deeds in the Sacred Scripture's record of Salvation history, completed and perfected in His Son-made-man, Jesus Christ.
3.)Ecclesial Signs- God reveals Himself in His continuing presence by the Holy Spirit in His people, the Church.
4.)Liturgical Signs- God reveals Himself in the prayer and sacramental worship, doctrine and moral service of the Church.
5.)Grace- God reveals Himself in His interior presence in our conscience and in all events in our daily lives, world events, recognized in the signs of the times.