Acts 20:20

how I never shrank from letting you know anything for your good, or from teaching you alike in public and from house to house,

Acts 20:27

I never shrank from letting you know the entire purpose of God.

Romans 8:32

The God who did not spare his own Son but gave him up for us all, surely He will give us everything besides!

2 Peter 2:4-5

For if God did not spare angels who had sinned, but committing them to pits of the nether gloom in Tartarus, reserved them under punishment for doom:

Revelation 3:7

Then to the angel of the church at Philadelphia write thus: ??These are the words of the true Holy One, who holds the key of David, who opens and none shall shut, who shuts and none shall open.

Revelation 4:8

The four living Creatures, each with six wings apiece, are full of eyes all over their bodies and under their wings, and day and night they never cease the chant, "Holy, holy, holy, is the Lord God almighty, who was and is and is coming."

Treasury of Scripture Knowledge

Summary

Then should I yet have comfort; yea, I would harden myself in sorrow: let him not spare; for I have not concealed the words of the Holy One.

Let him not

Have not concealed

Bible References

Let him not

Romans 8:32
The God who did not spare his own Son but gave him up for us all, surely He will give us everything besides!
2 Peter 2:4
For if God did not spare angels who had sinned, but committing them to pits of the nether gloom in Tartarus, reserved them under punishment for doom:

Have not concealed

Acts 20:20
how I never shrank from letting you know anything for your good, or from teaching you alike in public and from house to house,

The holy one

Revelation 3:7
Then to the angel of the church at Philadelphia write thus: ??These are the words of the true Holy One, who holds the key of David, who opens and none shall shut, who shuts and none shall open.
Revelation 4:8
The four living Creatures, each with six wings apiece, are full of eyes all over their bodies and under their wings, and day and night they never cease the chant, "Holy, holy, holy, is the Lord God almighty, who was and is and is coming."