1 Peter 3:10-12

True brotherly love: For he that will love life and see good days, let him refrain his tongue from evil, and his lips that they speak no guile;v.11. let him eschew evil and do good; let him seek peace and ensue it. V.12. For the eyes of the Lord are over the righteous, and His ears are open unto their prayers; but the face of the Lord is against them that do evil.

This admonition is addressed to Christians and must be understood as referring to the life of Christians only. If any Christian has a desire to enjoy his life in truth, to possess real, genuine happiness, to lead a quiet and peaceable life in all godliness and honesty; if he wants to see good days, days of blessing, from the Lord, when all his earthly needs are provided for and he can lie down in peace and sleep the sleep of the righteous: such a one should guard his tongue and his lips, lest they speak evil and become guilty of deceit.

If his enemies slander and provoke him, he should keep silence, and not become guilty of any sins against the Eighth Commandment; if his honor and good name are assailed, he must not lie or deceive in return. The best way of combating the evil, in this case, is that of turning away entirely from the evil, not to think about it, not to plan it, but rather to do good, to return good for evil, to gather coals of fire on the enemy’s head.

The attitude of the Christian will be shown especially in this, that he makes every effort to keep the peace, Rom. 12, 18, not only in a passive, half-hearted way, but with all eagerness, pursuing it with all avidity, without ceasing. Cp. Ps. 34, 13-17.

The Christians may act thus with all the greater confidence and quiet assurance: For the eyes of the Lord are upon the righteous and His ears toward their prayer, but the face of the Lord is directed upon those that do evil.

That is a great source of comfort to the believers: He who keeps Israel neither slumbers nor sleeps. The Lord is keeping the most careful watch over His children, He hears and sees everything that their enemies are attempting against them. If any one harms them, His ear is quick to catch the faintest sighing; and His countenance is directed against those that spend their days in doing evil. Vengeance is His, He will repay; and therefore His children may freely and cheerfully put their life with all its vicissitudes into His care, knowing that He will always take care of their interests in a way that will redound to their temporal and eternal welfare.