2 Samuel 21:15

The Philistines again waged war against Israel. David went down with his soldiers, and they fought the Philistines, but David became exhausted.

2 Samuel 5:17

When the Philistines heard that David had been anointed king over Israel, they all went in search of David, but he heard about it and went down to the stronghold.

2 Samuel 5:22

The Philistines came up again and spread out in the Valley of Rephaim.

Joshua 14:10-11

“As you see, the Lord has kept me alive these 45 years as He promised, since the Lord spoke this word to Moses while Israel was journeying in the wilderness. Here I am today, 85 years old.

2 Samuel 5:25

So David did exactly as the Lord commanded him, and he struck down the Philistines all the way from Geba to Gezer.

1 Chronicles 20:4

After this, a war broke out with the Philistines at Gezer. At that time Sibbecai the Hushathite killed Sippai, a descendant of the giants, and the Philistines were subdued.

Psalm 71:9

Don’t discard me in my old age;
as my strength fails, do not abandon me.

Psalm 71:18

Even when I am old and gray,
God, do not abandon me.
Then I will proclaim Your power
to another generation,
Your strength to all who are to come.

Psalm 73:26

My flesh and my heart may fail,
but God is the strength of my heart,
my portion forever.

Ecclesiastes 12:3

on the day when the guardians of the house tremble,
and the strong men stoop,
the women who grind cease because they are few,
and the ones who watch through the windows see dimly,

Isaiah 40:28-30

Do you not know?
Have you not heard?
Yahweh is the everlasting God,
the Creator of the whole earth.
He never grows faint or weary;
there is no limit to His understanding.

Jeremiah 9:23-24

This is what the Lord says:

The wise man must not boast in his wisdom;
the strong man must not boast in his strength;
the wealthy man must not boast in his wealth.

1 Peter 1:24-25

For

All flesh is like grass,
and all its glory like a flower of the grass.
The grass withers, and the flower falls,

Treasury of Scripture Knowledge

Summary

Moreover the Philistines had yet war again with Israel; and David went down, and his servants with him, and fought against the Philistines: and David waxed faint.

Bible References

The philistines

2 Samuel 5:17
When the Philistines heard that David had been anointed king over Israel, they all went in search of David, but he heard about it and went down to the stronghold.
1 Chronicles 20:4
After this, a war broke out with the Philistines at Gezer. At that time Sibbecai the Hushathite killed Sippai, a descendant of the giants, and the Philistines were subdued.

And david waxed faint

Joshua 14:10
“As you see, the Lord has kept me alive these 45 years as He promised, since the Lord spoke this word to Moses while Israel was journeying in the wilderness. Here I am today, 85 years old.
Psalm 71:9
Don’t discard me in my old age;
as my strength fails, do not abandon me.
Psalm 73:26
My flesh and my heart may fail,
but God is the strength of my heart,
my portion forever.
Ecclesiastes 12:3
on the day when the guardians of the house tremble,
and the strong men stoop,
the women who grind cease because they are few,
and the ones who watch through the windows see dimly,
Isaiah 40:28
Do you not know?
Have you not heard?
Yahweh is the everlasting God,
the Creator of the whole earth.
He never grows faint or weary;
there is no limit to His understanding.
Jeremiah 9:23
This is what the Lord says:

The wise man must not boast in his wisdom;
the strong man must not boast in his strength;
the wealthy man must not boast in his wealth.
1 Peter 1:24
For

All flesh is like grass,
and all its glory like a flower of the grass.
The grass withers, and the flower falls,

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.