There is a good simple passage in Acts 16….giving the essence of believing.

1Pe 1:9    Receiving the end of your faith, even the salvation of your souls.

Act 16:27    And the keeper of the prison awaking out of his sleep, and seeing the prison doors open, he drew out his sword, and would have killed himself, supposing that the prisoners had been fled.

Act 16:28    But Paul cried with a loud voice, saying, Do thyself no harm: for we are all here.

Act 16:29    Then he called for a light, and sprang in, and came trembling, and fell down before Paul and Silas,

Act 16:30    And brought them out, and said, Sirs, what must I do to be saved?

Act 16:31    And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house.

Act 16:32    And they spake unto him the word of the Lord, and to all that were in his house.

Act 16:33    And he took them the same hour of the night, and washed their stripes; and was baptized, he and all his, straightway.

Act 16:34    And when he had brought them into his house, he set meat before them, and rejoiced, believing in God with all his house.

There are 250 verses in the NT that have the word believe in the Greek root in them……

G4100

πιστεύω

pisteuō

Total KJV Occurrences: 250

believe, 114

Mat 9:28, Mat 18:6, Mat 21:25, Mat 21:32, Mat 24:23, Mat 24:26, Mat 27:42, Mar 1:15, Mar 5:36,Mar 9:23-24 (2), Mar 9:42, Mar 11:23-24 (2), Mar 11:31, Mar 13:21, Mar 15:32, Mar 16:17, Luk 8:12-13 (2), Luk 8:50, Luk 22:67, Luk 24:25, Joh 1:7, Joh 3:12 (3), Joh 4:21, Joh 4:42, Joh 4:48,Joh 5:38, Joh 5:44, Joh 5:47 (2), Joh 6:29-30 (2), Joh 6:36, Joh 6:64, Joh 6:69, Joh 7:5, Joh 7:39, Joh 8:24, Joh 8:45-46 (2), Joh 9:18, Joh 9:35-36 (2), Joh 9:38, Joh 10:26, Joh 10:37-38(4), Joh 11:15, Joh 11:27, Joh 11:40, Joh 11:42, Joh 11:48, Joh 12:36, Joh 12:39, Joh 12:47, Joh 13:19, Joh 14:1 (2), Joh 14:11 (2), Joh 14:29, Joh 16:9, Joh 16:30-31 (2), Joh 17:20-21 (2), Joh 19:35, Joh 20:25, Joh 20:31, Act 8:37, Act 13:39, Act 13:41, Act 15:7, Act 15:11, Act 16:31, Act 19:4, Act 21:20, Act 27:25 (2), Rom 3:22, Rom 4:11, Rom 4:24, Rom 10:8-9 (2), Rom 10:14, 1Co 1:21, 1Co 11:18, 1Co 14:22 (2), 2Co 4:13, Gal 3:22, Eph 1:19, Php 1:29, 1Th 1:7, 1Th 2:10, 1Th 4:13-14 (2), 2Th 2:10-11 (2), 1Ti 1:16, Heb 11:6, Jas 2:19, 1Pe 1:21, 1Pe 2:7, 1Jn 3:23, 1Jn 4:1,1Jn 5:13

believed, 78

Mat 8:13 (2), Mat 21:32 (2), Mar 16:13-14 (2), Luk 1:45, Luk 20:5, Joh 2:11, Joh 2:22-23 (2),Joh 3:18, Joh 4:39, Joh 4:41, Joh 4:50, Joh 4:53, Joh 5:46 (2), Joh 6:64, Joh 7:31, Joh 7:48, Joh 8:30-31 (2), Joh 10:25, Joh 10:42, Joh 11:45, Joh 12:11, Joh 12:37-38 (2), Joh 12:42, Joh 16:27,Joh 20:8 (2), Joh 20:29 (2), Act 2:44, Act 4:4, Act 4:32, Act 8:12-13 (2), Act 9:26, Act 9:42, Act 11:17, Act 11:21, Act 13:12, Act 13:48, Act 14:1, Act 14:23, Act 15:5, Act 17:12, Act 17:34, Act 18:8 (2), Act 18:27, Act 19:2, Act 22:18-19 (2), Rom 4:3, Rom 4:17-18 (2), Rom 10:14, Rom 10:16, Rom 13:11, 1Co 3:5, 1Co 15:2, 1Co 15:11, 2Co 4:13, Gal 2:16, Gal 3:6, Eph 1:13, 2Th 1:10, 2Th 2:12, 1Ti 3:16, 2Ti 1:12, Tit 3:8, Heb 4:3, Jas 2:23, 1Jn 4:16, Jud 1:5

believeth, 33

Mar 9:23, Mar 16:16, Joh 3:15-16 (2), Joh 3:18 (2), Joh 3:36, Joh 5:24, Joh 6:35, Joh 6:40, Joh 6:47, Joh 7:38, Joh 11:25-26 (2), Joh 12:44 (2), Joh 12:46, Joh 14:12, Act 10:43, Rom 1:16, Rom 4:5, Rom 9:33, Rom 10:4, Rom 10:10-11 (2), Rom 14:2, 1Co 13:7, 1Pe 2:6, 1Jn 5:1, 1Jn 5:5, 1Jn 5:10 (3)

believest, 8

Luk 1:20, Joh 1:50, Joh 11:26, Joh 14:10, Act 8:37, Act 26:27 (2), Jas 2:19

believing, 6

Mat 21:22, Joh 20:31, Act 16:34, Act 24:14, Rom 15:13, 1Pe 1:8

committed, 5

Rom 3:2, 1Co 9:17, Gal 2:7, 1Ti 1:11, Tit 1:3

trust, 3

Luk 16:11, 1Th 2:4, 1Ti 1:11

commit, 2

Luk 16:11 (2), Joh 2:24

believers, 1

Act 5:14