I hope that someone will suggest much better scriptures to go with each hymn line. The hymn lines can be split to accommodate further scripture texts

1973 LFHB	Author details
Hymn 21, included in these editions, 1903, 1932, 1951, 1973, 2001.	Darby, J. N. 18.11.1800-29.4.1882, b. Westminster. Trinity College, Dublin, 1825 C of Ireland deacon, then priest c1825- c1831, editor of 1881 LFHB, d. Sundridge House, Bournemouth, Dorset, 6.4.6.4.
1	Scriptures for each hymn line:
O Lord, 'tis sweet the thought	Ps 118:28 Thou art my God, and I will praise thee: thou art my God, I will exalt thee.
That Thou art mine;	Joh 20:28 Thomas answered and said to him, My Lord and my God.
But brighter still the joy	Ps 116:16 O LORD, truly I am thy servant; I am thy servant, and the son of thine handmaid: thou hast loosed my bonds.
That I am Thine!	John 17.6 thine they were and thou gavest them unto me
2
Thine own, O Lord, the fruit,	Isa 53:11 He shall see of the fruit of the travail of his soul, and shall be satisfied:
The cherished fruit	James 5.7 the precious fruit of the earth
Of Thine all-perfect love!	Tit 2:14 Who gave himself for us, that he might redeem us from all iniquity, and purify unto himself a peculiar people, zealous of good works.
No passing root	Heb 12:15 lest any root of bitterness springing up trouble you, and thereby many be defiled;
3
Of evil e'er will dim	Re 21:27 And there shall in no wise enter into it any thing that defileth, neither whatsoever worketh abomination, or maketh a lie: but they which are written in the Lamb’s book of life.
Thy cloudless rays;	2Sam 23.4 he shall be as the light of the morning, when the sun riseth, even a morning without clouds
But a full heart pour forth	Ps 57:7 My heart is fixed, O God, my heart is fixed: I will sing and give praise.
Thine endless praise!	Ps 79:13 So we thy people and sheep of thy pasture will give thee thanks for ever: we will shew forth thy praise to all generations.
4
O joy supreme and full,	Ps 16.11 Thou wilt shew me the path of life: in thy presence is fulness of joy; at thy right hand there are pleasures for evermore.
Where sunless day	Rev 22.5 there shall be no night there; and they need no candle, neither light of the sun; for the Lord God giveth them light:
Sheds forth, with light divine,	Isa 60.19 The sun shall be no more thy light by day... but the LORD shall be unto thee an everlasting light,
Its cloudless ray!	Isa 30:26 And the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that Jehovah bindeth up the breach of his people, and healeth the wound of their stroke.