Are there any encouraging scriptures I can share with someone who has lost a loved one in death?

If you decide to always obey Mat.. 5 : 48 GT then you can do what Jesus did .

Psalm 23. ....................

1 Corinthians 15
 20 But now is Christ brisen from the dead, and become the firstfruits of them that slept.21 For since by man came death, by man came also the resurrection of the dead.22 For as in Adam all die, even so in Christ shall all be made alive.

Revelation 21
3 And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God.
4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.

This one seems appropriate enough.

Hosea 13:16 King James Version (KJV)
16 Samaria shall become desolate; for she hath rebelled against her God: they shall fall by the sword: their infants shall be dashed in pieces, and their women with child shall be ripped up.

This one helped me

Isaiah 40
Do you not know?    Have you not heard?The Lord is the everlasting God,    the Creator of the ends of the earth.He will not grow tired or weary,    and his understanding no one can fathom.29He gives strength to the weary    and increases the power of the weak.30Even youths grow tired and weary,    and young men stumble and fall;31but those who hope in the Lord    will renew their strength.They will soar on wings like eagles;    they will run and not grow weary,    they will walk and not be faint.

"Life's not fair!" -- Gandalf, the Lord of the Rings

He's not really dead. As long as we remember him.

- Star Trek: The Wrath of Khan

Yes - The sooner you real eyes it the better.

◄ Colossians 3:3 ►
For you died, and your life is now hidden with Christ in God.

Seeing that you were dead
[al-Baqarah 2:28]