The term one another crops up a lot in the New Testament. The faith that you have placed in Jesus Christ is not an entirely personal matter between you and God. The popular idea of a "personal faith" is not what Christianity is about at all. Certainly, you are individually and personally accountable to God. However, when it comes to thinking about being "one in Christ" you shouldn't be thinking of the "one" as you, but as "one body" of which you are a member in particular (1Co 12:27). That's where the emphasis lies --not on one person, but on one body.
After all, even God is not one Person. So we must think of ourselves as each Person in the Godhead thinks of Himself: "We are members of one another" (Rom 12:5, Eph 4:25).
Don't Do This to One Another
Before we look at what our obligations to one another are, let's get a few negatives out of the way --things we should not do to one another.
"Do not judge one another any more" (Rom 14:13).
"If you bite and devour one another be careful lest you be consumed by one another... Let us not become boastful, provoking one another, envying one another"(Gal 5:15,26).
"Do not lie to one another" (Col 3:9).
"Speak not evil of one another my brethren" (James 4:11).
Love One Another
Now turning to the positive side, the most obvious one another in the scripture is "love one another". Jesus said this was the second greatest commandment (Mtt 22:35-40).
Jesus Said
"Love one another as I have loved you"(Jhn 15:12).
Paul Said
"You are taught of God to love one another"(1Th 4:9).
"Be devoted to one another in love --outdo one another in honour" (Rom 12:10).
"Owe nothing to anybody, except to love one another" (Rom 13:8).
"Through love serve one another"(Gal 5:13).
"Bearing with one another in love... be kind to one another, tender-hearted, forgiving one another..."(Eph 4:2,32).
"Abound in love toward one another" (1Th 3:12).
Peter Said
"Love one another with a pure heart fervently... love covers a multitude of sins" (1Pe 1:22; 4:8).
John Said
"Love one another"(1Jn 3:11,23; 4:7,11,12; 2Jn 1:5)
The opposite of this characterises non-Christians generally. "For we also were once...spending our life in malice and envy, hateful, hating one another. But when the kindness of God our Saviour and his love for mankind appeared, he saved us..."(Tit 3:3-4).
While love is in the heart, there should be an outward show of affection too. The Bible tells us to "Greet one another with a holy kiss of love" (Rom 16:15; 1Co 16:20; 1Pe 5:14).
Edify One Another
"So then let us persue the things which make for peace and the things by which we may edify one another"(Rom 14:19). There are many ways we can edify (build each other up):
FAITH:"Encouraged by
one another
's faith --yours and mine"(Rom 1:12).
ACCEPTANCE:"Be likeminded toward
one another
...Accept
one another
just as Christ accepted you"(Rom 15:5,7).
ADMONITION:"Full of goodness, filled with all knowledge,
that you may be able to admonish
one another
"(Rom 15:14).
TARRYING:"When you come together to eat [the Lord's Supper] tarry for
one another
"(1Co 11:33).
The underlying principle here is that its not right to run ahead impatiently, and leave behind
those who are lagging.
SHARING BURDENS:"Bear
one another
's burdens, and so fulfill the law of Christ"(Gal 6:2; 1Co 12:25).
SINGING:"Teaching and exhorting
one another
in psalms and hymns and spiritual songs..."(Eph 5:19; Col 3:16).
SUBMISSION:"Submit yourselves to
one another
in the fear of God"(Eph 5:21).
ESTEEM:"Let each of you esteem
one another
as more important than himself... Have this attitude in yourselves
which was also in Christ Jesus"(Php 2:3-5).
ENCOURAGEMENT:"Comfort [encourage]
one another
with these words"(1Th 4:18; 5:11)
SUPPORT:"Seek what is good for
one another
and for all men"(1Th 5:15).
STIMULATING:"Let us consider
one another
to provoke unto love and good works"(Heb 10:24).
PRAYER:"Confess your faults to
one another
and pray for
one another
that you may be healed"(Jas 5:16).
HOSPITALITY:"Use hospitality toward
one another
without grumbling"(1Pe 4:9)
GIFTS:"As each one has received a special gift,
use it in serving
one another
"(1Pe 4:10)