1. Apostolic Canon 25 — Deposition for fornication
A bishop, or presbyter, or deacon caught in fornication, or perjury, or theft, let him be deposed, and let him not be excommunicated; for the Scripture says: You shall not punish twice for the same thing. Likewise also the other clerics.
Source: Apostolic Canon 25.
2. Canon 70 of St Basil the Great
The deacon who has been polluted in lips, and has confessed his commission of this sin, shall be removed from his ministry. But he shall be permitted to partake of the sacrament together with the deacons. The same holds good in the case of a priest. If any one be detected in a more serious sin, whatever be his degree, he shall be deposed.
Source: St Basil's Canon 70.
3. Apostolic Canon 61 — Disqualification from ordination
If any accusation be brought against a believer of fornication or adultery, or any forbidden action, and he be convicted, let him not be promoted into the clergy.
Source: The Apostolic Canons.
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