Psalms 57:7

5 Be exalted, O God, above the heavens; may Your glory cover all the earth.

6 They spread a net for my feet; my soul was despondent. They dug a pit before me, but they themselves have fallen into it! Selah

My heart is steadfast, O God, my heart is steadfast. I will sing and make music.

8 Awake, my glory! Awake, O harp and lyre! I will awaken the dawn.

9 I will praise You, O Lord, among the nations; I will sing Your praises among the peoples.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
My heart is steadfast, O God, my heart is steadfast. I will sing and make music.
KJV
My heart is fixed, O God, my heart is fixed: I will sing and give praise.
WEB
My heart is steadfast, God. My heart is steadfast. I will sing, yes, I will sing praises.
ASV
My heart is fixed, O God, my heart is fixed: I will sing, yea, I will sing praises.
DARBY
My heart is fixed, O God, my heart is fixed: I will sing, yea, I will sing psalms.
BLB
my heart is steadfast, O God, my heart is steadfast; I will sing and make music.
ÅB
Mitt hjerte er rolig, Gud, mitt hjerte er rolig; jeg vil synge og lovprise.
OTB
Mitt hjerte er urokkelig, Gud, mitt hjerte er urokkelig;
Jeg vil synge, ja, jeg vil synge lovsanger!
B1930
Mitt hjerte er rolig, Gud, mitt hjerte er rolig; jeg vil synge og lovprise.

Study notes (Tyndale)

Original text and word study

Cross references