Revelation 2:4

But I have [this] against you: that you have left your first love.

Matthew 24:12-13

and because lawlessness will increase, the love of many will grow cold.

Jeremiah 2:2-5

"Go and proclaim in the ears of Jerusalem, {saying}, 'Thus says Yahweh, "I remember [concerning] you the loyal love of your childhood, the love of your betrothal-time, your going after me in the desert, in [the] land not sown.

Philippians 1:9

And this I pray: that your love may abound still more and more in knowledge and all discernment,

Philippians 3:13-16

Brothers, I do not consider myself to have laid hold of [it]. But [I do] one [thing], forgetting the things behind and straining toward the things ahead,

1 Thessalonians 4:9-10

But concerning brotherly love, I do not have need to write to you, for you yourselves are taught by God to love one another,

2 Thessalonians 1:3

We ought to give thanks to God always concerning you, brothers, just as it is fitting, because your faith is flourishing and the love of each one of you all toward one another is increasing

Hebrews 6:10-11

For God [is] not unjust, [so as] to forget your work and the love which you demonstrated for his name [by] having served the saints, and continuing to serve [them].

Revelation 2:14

But I have a few [things] against you: that you have there those who hold fast to the teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, to eat food sacrificed to idols and to commit sexual immorality.

Revelation 2:20

But I have against you that you tolerate the woman Jezebel, the one who calls herself a prophetess, and teaches and deceives my slaves to commit sexual immorality and to eat food sacrificed to idols.

Revelation 3:14-17

"And to the angel of the church in Laodicea write: "This is what the Amen, the faithful and true witness, the originator of God's creation, says:

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: that you have there those who hold fast to the teaching of Balaam, who taught Balak to put a stumbling block before the sons of Israel, to eat food sacrificed to idols and to commit sexual immorality.

General references

Matthew 25:7
Then all those virgins woke up and trimmed their lamps.
Hebrews 13:1
Brotherly love must continue.