2,3  I beseech Euodias, and beseech Syntyche, that they be of the same mind in the Lord. And I intreat thee also, true yokefellow, help those women which laboured with me in the gospel, with Clement also, and with other my fellowlabourers, whose names are in the book of life.

Also see Paul's specific brethren:
Romans 16
I Corinthians 16:12-19
Colossians 4:7-17
II Timothy 4:19-22
Titus 3:12-15
Philemon 23-24

Against:
Ephesians 6:11  Wiles of the devil

In:
In the Power of God and not in the wisdom of men - I Corinthians 2:5
In Grace - Romans 5:2
In his Gospel - I Corinthians 15:1
In the faith - I Corinthians 16:13
In His Liberty - Galatians 5:1
In the Lord - Philippians 4:1; I Thessalonians 3:8
In the Will of God - Colossians 4:12

By:
faith - II Corinthians 1:24

With:
Armour of God - Ephesians 6:13

Hold
Traditions from their words and epistles - II Thessalonians 2:15

We all will stand eventually:
Judgment Seat - Romans 14:10

Not with: II Corinthians 6:14

With - in manners of:
Comfort - Romans 1:2
Strive together - Romans 15:30
Perfectly joined together - no divisions - I Corinthians 1:10
As labourers - I Corinthians 3:9

As a tempered body - I Corinthians 12:24; Ephesians 2:21,22; 4:16; Colossians 2:18,19

Of Paul - Philippians 3:17

Sit together - Ephesians 2:6
Glorified and gathered together - Romans 8:17; II Thessalonians 2:1
Fullness of Gentiles and times - Romans 11:25 vs. Ephesians 1:10
We will be Raptured together - I Thessalonians 4:17
We will live together with him - I Thessalonians 5:10,11