Revelation 2:4

But I have this [charge] against you, that you have left your first love [you have lost the depth of love that you first had for Me].

Matthew 24:12-13

Because lawlessness is increased, the love of most people will grow cold.

Jeremiah 2:2-5

“Go and proclaim in the ears of Jerusalem, saying, ‘Thus says the Lord,

“I remember [earnestly] the lovingkindness and devotion of your youth,
Your time of betrothal [like that of a bride during the early years in Egypt and again at Sinai],
When you followed Me in the wilderness,
Through a land not sown.

Philippians 1:9

And this I pray, that your love may abound more and more [displaying itself in greater depth] in real knowledge and in practical insight,

Philippians 3:13-16

Brothers and sisters, I do not consider that I have made it my own yet; but one thing I do: forgetting what lies behind and reaching forward to what lies ahead,

1 Thessalonians 4:9-10

Now concerning brotherly love, you have no need for anyone to write you, for you have been [personally] taught by God to love one another [that is, to have an unselfish concern for others and to do things for their benefit].

2 Thessalonians 1:3

We ought always and indeed are morally obligated [as those in debt] to give thanks to God for you, brothers and sisters, as is fitting, because your faith is growing ever greater, and the [unselfish] love of each one of you toward one another is continually increasing.

Hebrews 6:10-11

For God is not unjust so as to forget your work and the love which you have shown for His name in ministering to [the needs of] the saints (God’s people), as you do.

Revelation 2:14

But I have a few things against you, because you have there some [among you] who are holding to the [corrupt] teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, [enticing them] to eat things that had been sacrificed to idols and to commit [acts of sexual] immorality.

Revelation 2:20

But I have this [charge] against you, that you tolerate the woman Jezebel, who calls herself a prophetess [claiming to be inspired], and she teaches and misleads My bond-servants so that they commit [acts of sexual] immorality and eat food sacrificed to idols.

Revelation 3:14-17

“To the angel (divine messenger) of the church in Laodicea write:

“These are the words of the Amen, the trusted and faithful and true Witness, the Beginning and Origin of God’s creation:

Treasury of Scripture Knowledge

Summary

Nevertheless I have somewhat against thee, because thou hast left thy first love.

General references

Bible References

I have

Revelation 2:14
But I have a few things against you, because you have there some [among you] who are holding to the [corrupt] teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, [enticing them] to eat things that had been sacrificed to idols and to commit [acts of sexual] immorality.

General references

Matthew 25:7
Then all those virgins got up and put their own lamps in order [trimmed the wicks and added oil and lit them].
Hebrews 13:1
Let love of your fellow believers continue.