Here are 94 instances in which emphatic negations appear in the New Testament:
Matthew 5:18; 5:20; 5:26; 10:23; 10:42; 13:14; 15:6; 16:22;16:28; 18:3; 23:39; 24:2; 24:21; 24:34; 24:35; 25:9; 26:29; 26:35
Mk. 9:1; 9:41; 10:15; 13:2;13:19; 13:30; 13:31; 14:25; 14:31; 16:18
Lk. 1:15; 6:37; 8:17; 9:27; 10:19; 12:59; 13:35; 18:7;18:17; 21:18; 21:32; 21:33; 22:16; 22:18; 22:67; 22:68
Jn. 4:14; 4:48; 6:35; 6:37; 8:12; 8:51;8:52; 10:5; 10:28; 11:26; 11:56; 13:8; 13:38; 18:11; 20:25
Acts 13:41; 28:26
Rom. 4:8
1 Co. 8:13
Gal. 5:16
1 Thess. 4:15; 5:3
Heb. 8:11; 8:12; 10:17; 13:5
1 Pet. 2:6
2 Pet. 1:10
Rev. 2:11; 3:3; 3:5; 3:12; 9:6; 15:4; 18:7; 18:14; 18:21; 18:22; 18:23; 21:25; 21:27