Ephesians 4:27

Neither give place to the devil - Your adversary will strive to influence your mind, and irritate your spirit; watch and pray that he may not get any place in you, or ascendancy over you.

As the word διαβολος is sometimes used to signify a calumniator, tale-bearer, whisperer, or backbiter; (see in the original, 1 Timothy 3:11; 2 Timothy 3:3, and Titus 2:3); here it may have the same signification. Do not open your ear to the tale-bearer, to the slanderer, who comes to you with accusations against your brethren, or with surmisings and evil speakings. These are human devils; they may be the means of making you angry, even without any solid pretense; therefore give them no place, that you may not be angry at any time; but if, unhappily, you should be overtaken in this fault, let not the sun go down upon your wrath; go to your brother, against whom you have found your spirit irritated; tell him what you have heard, and what you fear; let your ears be open to receive his own account; carefully listen to his own explanation; and, if possible, let the matter be finally settled, that Satan may not gain advantage over either.

Neither give place to the devil - This has respect probably to the exhortation in the former verse. "Do not yield to the suggestions and temptations of Satan, who would take every opportunity to persuade you to cherish unkind and angry feelings, and to keep up a spirit of resentment among brethren." Many of our feelings, when we suppose we are merely defending our rights, and securing what is our own, are produced by the temptations of the devil. The heart is deceitful; and seldom more deceitful in any case than when a man is attempting to vindicate himself from injuries done to his person and reputation. The devil is always busy when we are angry, and in some way, if possible, will lead us into sin; and the best way to avoid his wiles is to curb the temper, and restrain even sudden anger. No man sins by "restraining" his anger: no man is certain that he will not who indulges it for a moment.

4:27 Neither give place to the devil - By any delay.