Peter warns believers to live holy lives as they see the day of Judgement approaching. The only safe place in the terrible times we are living in is in the holy presence of God.
The devil is going about as a roaring lion seeking whom he may devour. If it were possible he would devour the saints one by one, but God wants us to grow in holiness so that the devil cannot touch us. If he does God will rebuke him for touching the apple of His eye.
Jesus has become our holiness and our righteousness. In other words, as we spend time in the Word of God and allow the Word to abide in us, it is Christ the Living Word. We cannot face the devil in our own strength. We need to resist tempations of the devil with the Word. We need to be full of the Word and full of the Spirit in order to progress in holy living.What manner of people should we be? 2002/09/16
2 Peter 3:10-15
10 But the day of the Lord will come as a thief in the night, in which the heavens will pass away with a great noise, and the elements will melt with fervent heat; both the earth and the works that are in it will be burned up.11 Therefore, since all these things will be dissolved, what manner of persons ought you to be in holy conduct and godliness,12 looking for and hastening the coming of the day of God, because of which the heavens will be dissolved, being on fire, and the elements will melt with fervent heat?13 Nevertheless we, according to His promise, look for new heavens and a new earth in which righteousness dwells.
14 Therefore, beloved, looking forward to these things, be diligent to be found by Him in peace, without spot and blameless;15 and consider that the longsuffering of our Lord is salvation?as also our beloved brother Paul, according to the wisdom given to him, has written to you,
What manner of people ought we to be:
4217 potapos { pot-ap-os?}: Manner:
1) from what country, race or tribe
2) of what sort or quality (what manner of)
2a) of persons

Ought to be:
1163 dei { die}
1b) necessity brought on by circumstances or by the conduct of others toward us.
1c) necessity in reference to what is required to attain some end
1d) a necessity of law and command, of duty, equity
1e) necessity established by the counsel and decree of God, especially by that purpose of his which relates to the salvation of men by the intervention of Christ and which is disclosed in the Old Testament prophecies
1e1) concerning what Christ was destined finally to undergo, his sufferings, death, resurrection, ascension
391 anastrophe { an-as-trof-ay?} :conversation
1) manner of life, conduct, behaviour, deportment

2150 eusebeia { yoo-seb?-i-ah} :Godliness
1) reverence, respect
2) piety towards God, godliness

Hasting: we can speed up the coming of the Lord if we really desire to see it!
4692 speudo { spyoo?-do}
1) to haste, make haste
2) to desire earnestly

Diligent: we need to become diligent in our Christian duties towards God and people.
4704 spoudazo { spoo-dad?-zo}
AV - endeavour 3, do diligence 2, be diligent 2, give diligence 1, be forward 1, labour 1, study 1; 11
1) to hasten, make haste
2) to exert one?s self, endeavour, give diligence

Blameless: God desires that all of us become blameless before Him so that the enemy has nothing in us. If we are blameless the enemy cannot touch us!
298 amometos { am-o?-may-tos}
AV - without rebuke 1, blameless 1; 2
1) that cannot be censured, blameless

salvation: In order to understand salvation we need to look at the full meaning of the Greek word:
4991 soteria { so-tay-ree?-ah}
1) deliverance, preservation, safety, salvation
1a) deliverance from the molestation of enemies
1b) in an ethical sense, that which concludes to the souls safety or salvation
1b1) of Messianic salvation
2) salvation as the present possession of all true Christians
3) future salvation, the sum of benefits and blessings which the Christians, redeemed from all earthly ills, will enjoy after the visible return of Christ from heaven in the consummated and eternal kingdom of God.

Fourfold salvation: saved from the penalty, power, presence and most importantly the pleasure of sin. A.W. Pink

Manner of Man: here are some more Scriptures to look up and discuss:
II Samuel 7:19
Matthew 8:28
Mark 4:41
Luke 8:25
Luke 9:55
Acts 26:4
II Timothy 3:10
Hebrews 10:25
I John 3:1 ? What manner of Love the Father has shown towards us
Matthew 4:23 ? Healed all manner of sickness and diseases
Matthew 10:1
Matthew 5:11 ? Speak all manner of evil against you ? Rejoice! That is how they treated the true prophets before you!