One thing that leaps out at me in all the metaphors Peter uses in 1 Peter 2:1-12 is that they are all expressed in the plural. There's no room for lone-ranger Christians in the New Testament. We need one another as believers if we're going to grow in Jesus Christ.
Here is an overview of how God commands us to interact with "one another".
Love one another (Romans 12:10; 1 Peter 1:22; 4:8; John 3:11, 23; 4:7,11-12)
Honour one another (Romans 12:10)
Live in harmony with one another (Romans 12:16; 15:5)
Do not judge one another (Romans 14:13)
Welcome one another (Romans 15:7)
Comfort one another (1 Corinthians 13:11)
Serve one another (Galatians 5:13; 1 Peter 4:10)
Bear (put up with) one another (Ephesians 4:2; Colossians 3:13)
Be Kind to one another (Ephesians 4:32)
Speak to one another in psalms, hymns, & spiritual Songs (Ephesians 5:19)
Submit to one another (Ephesians 5:21)
Do not lie to one another (Colossians 3:9)
Teach and admonish one another (Colossians 3:16)
Encourage one another (1 Thessalonians 4:18; 5:11; Hebrews 10:25)
Seek to do good one another (1 Thessalonians 5:15)
Exhort one another (Hebrews 3:13)
Stir up one another to love and good works (Hebrews 10:24)
Do not speak evil against one another (James 4:11)
Do not grumble against one another (James 5:9)
Confess your sins to one another (James 5:16)
Pray for one another (James 5:16)
Show hospitality to one another (1 Peter 4:9)
Cloth yourselves with humility toward one another (1 Peter 5:5)
Did I miss anything?