Constant love needs an eternal end

Nehemiah 9:32-33

"Now therefore, O our God, the great, mighty and awesome God, who keeps his covenant of love, do not let all this hardship seem trifling in your eyes--the hardship that has come upon us, upon our kings and leaders, upon our priests and prophets, upon our fathers and all your people, from the days of the kings of Assyria until today. In all that has happened to us, you have been just; you have acted faithfully, while we did wrong."

Eliz. Barret Browning, Sonnets from the Portuguese XIV

If thou must love me, let it be for nought

Except for love's sake only. Do not say

I love her for her smile--her look--her way

Of speaking gently,--for a trick of thought

That falls in well with mine, and certes brought

A sense of ease on such a day

--

For these things in themselves, Belovèd, may

Be changed, or change for thee,--and love, so wrought,

May be unwrought so. Neither love me for

Thine own dear pity's wiping my cheek dry,--

A creature might forget to weep, who bore

Thy comfort long, and lose thy love thereby!

But love me for love's sake, that evermore

Thou may'st love on, through love's eternity.

We love because He first loved us

Elizabeth Barret Browning, Sonnets from the Portuguese XII

Indeed this very love which is my boast,

And which, when rising up from breast to brow,

Doth crown me with ruby large enow

To draw men's eyes and prove the inner cost,--

This love even, all my worth, to the uttermost,

I should not love withal, unless that thou

Hadst set me an example, shown me how,

When first thine earnest eyes with mine were crossed,

And love called love. And thus, I cannot speak

Of love even, as good thing of my own:

Thy soul hath sn@tched up mine all faint and weak,

And placed it by thee on a golden throne,--

And that I love (O soul, we must be meek--)

Is by thee only, whom I love alone.