Meditation in the Bible

In the Biblical world meditation was not a silent practice. (The word) means "growl," "utter," or "moan" as well as "meditate" or "muse." Do doubt meditation involved a muttering sound from reading half aloud or conversing with oneself (cf. Ps. 77:6).
Consequently, translations can vary: e.g., in Job 15:4 "meditation" (RSV) is rendered "prayer" by the AV and "to speak" by the NEB; in the AV Ps. 5:1 has, "O LORD, consider my meditation," but the RSV as "give heed to my groaning" and the NEB
"consider my inmost thought."
International Standard Bible Encyclopedia, Rev. Ed., 1986, III:305.

Genesis 24:63 And Isaac went out to meditate in the field at the eventide: and he lifted up his eyes, and saw, and, behold, the camels were coming.

Psalm 77:3 I remembered God, and was troubled: I complained, and my spirit was overwhelmed. Selah.

Psalm 119:15 I will meditate in thy precepts, and have respect unto thy ways.

Psalm 119:23 Princes also did sit and speak against me: but thy servant did meditate in thy statutes.

Psalm 119:27 Make me to understand the way of thy precepts: so shall I talk of thy wondrous works.

Psalm 119:48 My hands also will I lift up unto thy commandments, which I have loved; and I will meditate in thy statutes.

Psalm 119:78 Let the proud be ashamed; for they dealt perversely with me without a cause: but I will meditate in thy precepts.

Psalm 119:148 Mine eyes prevent the night watches, that I might meditate in thy word.

Psalm 145:5 I will speak (my theme shall be [NEB]) of the glorious honour of thy majesty, and of thy wondrous works.

Psalm 77:6 I call to remembrance my song in the night: I commune with mine own heart: and my spirit made diligent search.

Joshua 1:8 This book of the law shall not depart out of thy mouth; but thou shalt meditate therein day and night, that thou mayest observe to do according to all that is written therein: for then thou shalt make thy way prosperous, and then thou shalt have good success.

Psalm 1:2 But his delight is in the law of the LORD; and in his law doth he meditate day and night.

Psalm 38:12 They also that seek after my life lay snares for me: and they that seek my hurt speak mischievous things, and imagine deceits all the day long.

Psalm 63:6 When I remember thee upon my bed, and meditate on thee in the night watches.

Psalm 77:12 I will meditate also of all thy work, and talk of thy doings.

Psalm 143:5 I remember the days of old; I meditate on all thy works; I muse on the work of thy hands.

Luke 21:14 Settle it therefore in your hearts, not to meditate before what ye shall answer:

Psalm 104:34 My meditation of him shall be sweet: I will be glad in the LORD.

Job 15:4 Yea, thou castest off fear, and restrainest prayer before God.

Psalm 119:97 MEM. O how love I thy law! it is my meditation all the day.

Psalm 119:99 I have more understanding than all my teachers: for thy testimonies are my meditation.

Psalm 19:14 Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O LORD, my strength, and my redeemer.

Psalm 49:3 My mouth shall speak of wisdom; and the meditation of my heart shall be of understanding.

Psalm 5:1 To the chief Musician upon Nehiloth, A Psalm of David. Give ear to my words, O LORD, consider my meditation.

Psalm 119:148 Mine eyes precede the night watches, that I might meditate in thy word.

Isaiah 33:18 Thine heart shall meditate terror. Where is the scribe? where is the receiver? where is he that counted the towers?

1 Timothy 4:15 Meditate upon these things; give thyself wholly to them; that thy profiting may appear to all.

So it certainly appears that meditation on God's Word is important. We probably lack a great deal of something that was very important in the life of believers long ago.