All the Scriptures give clear proof of the Trinity, and it is from these that our principle is deduced...the distinction of the Trinity is quite clearly displayed.
TertullianKeep always in mind the rule of faith which I profess and by which I bear witness that the Father and the Son and the Spirit are inseparable from each other, and then you will understand what is meant by it. Observe now that I say the Father is other [distinct], the Son is other, and the Spirit is other. This statement is wrongly understood by every uneducated or perversely disposed individual, as if it meant diversity and implied by that diversity a separation of Father, Son, and Holy Spirit
TertullianEnoch predicted that "the demons and the spirits of the angelic apostates would turn into idolatry all the elements, all the adornment of the universe, and all things contained in the heaven, the sea, and the earth, that they might be consecrated as God in opposition to God." All things, therefore, does human error worship, except the Founder of all himself. The images of those things are idols; the consecration of the images is idolatry.
TertullianWhen we are going to enter the water ... in the presence of the congregation and under the hand of the president, we solemnly profess that we disown the devil, his pomp, and his angels. After this we are immersed three times, making a somewhat larger pledge than the Lord appointed in the Gospel. Then we are taken up [a reference to the Roman tradition of recognizing a newborn baby as a member of the family]. We first taste a mixture of milk and honey and from that day we refrain from the daily bath for a whole week.
Tertullian